Walinga CENTRAL-VAC AIR-PURGE User manual

R-1: March 17, 2018
CENTRAL-VAC AIR-PURGE
INSTALLATION MANUAL

R-1: March 17, 2018
Dear Customer,
Thank you for choosing WALINGA PNEUMATIC CONVEYING SYSTEMS. For your convenience,
should you require any information related to Parts, Service or Technical Engineering, please contact
one of the following Walinga Personnel in Guelph at 1-888 925-4642 unless noted*
TECHNICAL - ENGINEERING:
Duane Swaving *226-979-8227 [e-mail]
Ken Swaving *519 787-8227 (ext:100) [e-mail]
WARRANTY CLAIMS:
Canada: Gary Nijenhuis (ext:258) [e-mail]
USA: Jonathan Medemblik * [phone] (ext 8) [e-mail]
SERVICE MANAGER:
Andy Nijenhuis *[phone] (ext:260) [e-mail]
ORIGINAL PARTS SALES:
Ontario and Eastern Canada:
Jack Lodder (ext: 224) [e-mail] Parts Department Fax: [phone]
Manitoba and Western Canada:
Chad Yeo [phone] (ext: 424) [e-mail]
USA:
John VanMiddlekoop * [phone] (ext 3) [e-mail]
SALES MANAGER:
Tom Linde *519-787-8227 (ext 5) [e-mail]
Peter Kingma [phone] [e-mail]
SALES REPRESENTATIVE:
Tim Linde *519-787-8227 ext 109 [e-mail] or *519-993-8447
Henry Breukelman *204-745-2951 [e-mail]
CORPORATE HEAD OFFICE:
5656 Highway 6N
RR#5, Guelph, Ontario, N1H 6J2
PHONE: [phone] FAX: [phone]
www.walinga.com
FACTORY DISTRIBUTION AND SERVICE CENTRES:
938 Glengarry Cres. Fergus, Ontario Canada N1M 2W7
Tel: [phone] Fax: [phone]
1190 Electric Ave. Wayland , MI.USA 49348
Tel: [phone] Fax: [phone]
70 3rd Ave. N.E. Box 1790 Carman, Manitoba Canada R0G 0J0
Tel: [phone] Fax: [phone]
PO Box 2426, 24 Molloy Street, Toowoomba QLD, Australia 4350
Tel: [phone] Fax: [phone]

R-1: March 17, 2018
Overview
• This manual is a breakdown and walk through of Walinga's Air Purge Central Vac
System.
• It was created in order to generate efficiency and clarity in the setup and installation of
Central Vac Systems.
• You will find a breakdown of all the components that are included in a Central Vac
system and how they come together; as well as a breakdown of how the piping system
shall be installed.
• This manual will cover key points and procedures utilized in the construction and
installation of the Central Vac Air Purge system.
• Every Central Vac piping system is original and built to suit the customer's needs.
Safety During the Installation of the Central Vac System (Refer to unit manual)
• Ensure that the blower and airlock have no power and
are locked out, before performing service work on the
Central Vac system. Failure to do so may result in
severe injury or death.
• Ensure that all chain guards or moving parts have
their proper guards installed, preventing injury.
• Wear the appropriate protective gear.
• Ensure that the Central Vac is anchored to firm and
level ground.
• Make certain that sufficient
amperage, at the proper voltage and frequency (60Hz) is available
before connecting power for the electric model. Have a licensed
electrician provide power to the machine. Always follow ANSI/NFPA
70 Standard and all local codes when providing electrical power.
• Have at least one extra person available to assist when elevating,
moving or connecting to other equipment.
• Wear appropriate protective gear while working on the Central Vac System.
• Once finished, give the machine a “once over” for any loose bolts, components, leaks,
faulty seals, and proper anchoring.
• Think SAFETY! Work SAFELY!
• Walinga would like to remind the owner of this piece of equipment, that in order to be in
accordance with NFPA 652-Chapter 7, a Dust Hazards Analysis (DHA) must be
completed.
Key Items to Follow
• Follow Safety procedures.
• Ensure proper sealing of the mating components.
• Inlet placements in the piping.
• Use compression couplings and grounding strips at all joints.
• Keep piping as straight as possible.
• Keep all components within 400' of the Central Vac unit.
• Install Y elbows from the side or from the top of piping, and have the elbows follow the
flow of the air stream.

R-1: March 17, 2018
Components of a Central Vac Air Purge System

R-1: March 17, 2018
 1. Cyclone Assembly
o The cyclone assembly uses cyclonic action in order to
separate the bulk product from the air-stream.
o It is found bolted to the shipping rack separate from
other parts.
o The cyclone assembly bolts to the airlock package.
 2. Receiver Midsection
o The receiver midsection holds the four filters used to
further separate bulk product from the
airstream.
o The receiver midsection is the portion of
the receiver that is to bolted to the Cyclone
Assembly.
o Install with care, ensuring there is no
damage to the explosion vent.
 3. Receiver Top
o The receiver top is the portion of the machine that
controls the air-purge cycle. It uses high
pressure air to clean the filters in the
midsection.
o The receiver includes purge valves, an air
tank and a timer control box attached to it.
o The receiver top comes pre-assembled
with the receiver midsection.
Fig 1. Cyclone Assembly
Fig 2. Receiver Midsection
Fig 3. Receiver Top

R-1: March 17, 2018
 4. Airlock / Rotary Valve
o The airlock package comes equipped
with a Walinga 1210 drop-thru airlock.
It is built as a single assembly.
o The airlock will be placed under the
cyclone assembly and above the
customer’s discharge option.
o Discharge piping is 6” and should be
installed vertically with a maximum of
a 20° slope. This ensures that dust
will flow through the spouting using
only gravity.
o The airlock operates off of an electric
motor and chain drive and has to be
placed in an easily accessible location for service.
o The dimension of the airlock package is 27-½” long by 28”
wide.
 5. Blower Package
o The blower package comes
equipped with a Walinga PD Blower.
It is used to generate the suction of
the system. The blower package
frame is a heavy-duty steel frame.
o The base itself is 32” wide by 43–
3/8” long for the standard 614
blower. (31-½” wide by 41-½” long
for the 510 blower base)
o The blower package has a single 6”
port where the air stream is
generated.
o The 6” pipe going into the blower
inlet, comes from the receiver top
section.
o The blower is a crucial part of the
Central-Vac system and requires
regular service.
o When installing, ensure that the belt
cover and the blower are easily
accessible for the service personnel.
Fig 4. Airlock Package
Fig 5. Blower Package

R-1: March 17, 2018
Typical Machine Setup

R-1: March 17, 2018
Piping Components
 Aluminum tubes
o 3” aluminum tubing is the typical size of the main line of the Central Vac system.
o 3” aluminum tubing is used for the main and drop lines, going down towards the
camlock inlets.
o In some applications the unit will be equipped with a 3” mainline and 2” drop lines.
 Galvanized steel elbows
o Used for corners in the
piping system.
o Available in 2”,3”,4”, and 6”.
o 6” elbows are utilized
between the blower, filter
housing, and separators.
o TY's are used to connect the
inlet piping going to the main
pipe line.
 Drop lines should never enter the main line from the bottom.
 TY's are directional and must be installed in accordance with the air flow.
 The direction of the airflow is coming through the Y into the main line.

R-1: March 17, 2018
 Compression Coupling
o These are used to join all the piping together. They consist of a
three-bolt compression clamp, black gasket, and a grounding
strip.
 In order to fully function, the clamp must be fully tightened
for maximum clamping force.
o Ground strip is put into place in order to prevent
static electricity build up.
 Mounting Brackets
o The mounting brackets are mounted to the wall or to
any other solid support.
o The saddle clamps are attached to the mounting
brackets.
 Saddle Clamps
o Saddle clamps consist of two parts; a “saddle”
and a u-bolt which are used to attach the piping
system to mounting brackets.
o Tighten the nuts evenly to prevent any incidents
of piping separation or falling.

R-1: March 17, 2018
 Tube Hangers
o Tube hangers are an effective way to hang the piping
system from the beams running along the roof.
o Consists of a Top Beam Clamp, a rod, and a hanger
properly sized to the piping.
 Rubber Flex Line/ Pickup Hose
o Rubber flex line is used on the
suction end of the central vac
system, and is used by the
operator.
o The flex line has a static wire built into it to prevent static electricity build-up.
 If servicing a rubber hose, ensure that the ground wire is making contact
with the coupling.
 After the service, the installer must check the resistance by using an OHM
meter on the couplings while they are in contact with each other.
 The conductivity of the
coupling should read between
0 and 5 ohms resistance.
o Also available as a clear hose.

R-1: March 17, 2018
 Camlock Coupling
o The camlock couplings are used to connect the piping
to pick-up hoses.
o They are designed for quick and easy connect and
release.
o A rubber seal is installed in the opening of the
coupling to ensure proper connection and to prevent
connection leaks.
o When installing a camlock coupling, be sure to apply a ring of silicone around the
piping and have the dust plugs inserted and clamped in place.
o By having the dust plugs inserted during installation ensures that the gasket is not
pushed out by the pipe
 After installing the coupler, attach the chain from
the dust plug to the Camlock coupling.
 This ensures that the dust cap will not be lost when
an operator is using the Central Vac system.

R-1: March 17, 2018
 Piping Requirements
 Every system is different, built to suit the
customer.
 A typical system will include piping layout/
system design drawings provided by either
approved project engineering staff or qualified
Walinga personnel.
 All piping installed must be properly supported.
o When installing the support points,
ensure that there is enough strength to
allow for a full pipe line, should the
system become plugged.
o One support point for every 15' of pipe
line is recommended.
 Ensure that the main lines are as straight as
possible to maintain maximum conveying rate.
 Space the inlets and the inlet piping, or at a maximum of
40' apart, in accordance with piping layout drawing
provided.
 When installing the inlet lines, ensure that the Y elbows
enter from either the side or the top of the main pipe line.
The Y must also follow the flow of the product and air
stream.
 All the piping should be within 400' of the main Central
Vac system to maintain product air speed and avoid
plugging.

R-1: March 17, 2018
 All compression couplers must be fully tightened, to ensure a proper seal.
o The grounding strip in the compression couplings must be properly installed,
making contact to both pipes. This to ensures total protection from static
electricity build up as the grounding strip is connected to both pipes.
 As much as possible, ensure that all joining components are easily accessible for any
future service and maintenance.
 For ease in future maintenance, install all the compression couplings facing the same
way.
 Electro-Static hazard warning labels must be installed on the piping by all inlets.

R-1: March 17, 2018
Set Up Procedure
Every System is different!
1. Inspect the system design drawings (if available),
compare with all the parts received.
2. Inspect all the locations of where the
components will be installed, look for:
(a) NFPA requirements
(b) Proper support points.
(c) Obstructions
3. Starting at the Central Vac's main components
install and anchor the hanger manifold.
(a) If not using Walinga Supplied hanger, ensure
alternative is structurally sound enough to
support and sustain the weight of the
machine in operation and the product being
conveyed.
4. Install the airlock and fasten it to the hanger
manifold.
5. Run a bead of silicone around the top lip of the airlock.
6. Bolt the cyclone mounting bracket to the rack or a
structurally sound support.
7. Apply silicone to the top flange of the cyclone assembly,
bolt the pre-assembled receiver mid-section and
receiver top to the cyclone assembly. Ensure that the
explosion vent is positioned in the correct direction
towards ducting or outlet on the wall. (If a change to the
orientation of the receiver top is required, ensure that
the air purge tank and valves are square to the
explosion vent. There are only four acceptable
positions). The mounting bracket is to be positioned
directly opposite the air tank and purge valves on the
bottom side of the top flange on the receiver mid-section.
8. Bolt receiver mid-section mounting bracket to rack or
structurally sound support.
9. Install receiver brackets to the Airlock.
10. Place blower package in approved location and secure.
11. Using appropriate size piping and elbows, pipe from the
blower inlet to the outlet on the receiver top section.
(a) When joining piping, ensure that the grounding strip
is present on all compression couplers. Do not leave
gaps between piping sections or between piping and
elbows. Gaps will lead to premature wear of piping
and create holes in couplers and gaskets.

R-1: March 17, 2018
12. Using 6” tube or pipe, discharge the airlock into the customer’s desired location. Ensure
that all NFPA standards are met. The discharge pipe should be installed vertically with a
maximum of a 20° slope. This ensures that dust will flow through spouting using only
gravity.
13. For ease in maintenance install all compression couplings facing the same way.
(a) This creates minimal movement when removing any couplings.
14. When installing the camlock couplings, ensure that the dust cap is installed and clamped
on, before applying silicone to the piping and installing the camlock coupling.
15. Install Electro-Static Hazard warning labels on the piping at all the pick up points.
16. Install the chain from the dust cap to the camlock couplings.
17. Install explosion ducting outside of the facility.
(a) Ensure that the duct is no longer than 16 inches. If it is, please contact the Walinga
Representative.
18. Walinga would like to remind the owner of this piece of equipment, that in order to be in
accordance with NFPA 652-Chapter 7, a Dust Hazards Analysis (DHA) must be
completed.
Notes:
• Customers may have different discharge options making every installation unique.
◦ Refer to the system design drawing for every install.
• Dust free 2 cubic yard dust bin which can be installed under the discharge.
• A selection of different electrical options are available for the customers.
◦ NEMA 4 or NEMA 12 starter control panel complete with starters for both blower and
airlock drive motors. The panel will include a relay to control the optional slide gate.
◦ Custom panels are available.
◦ Note: As a rule, Walinga Central Vac systems are equipped with Toshiba 3 phase
electric motors. Please refer to the sales contract for voltage and HP requirements,
or contact your local Walinga representative.
◦ All electrical connections must be made by a certified electrician in
accordance with local electrical codes.
"It is the responsibility of the owner/operator of facilities in which explosion
vents are utilized to comply with the requirements of the AHJ, which is typically
the use of National Fire Protection Association ("NFPA") Standard 68. Owners /
operators must deploy an appropriate number and configuration of vents;
ensure vents are installed where activation will not cause personal injury or
unacceptable property damage; and ensure vents are not adversely affected by
process conditions or conditions on the non-process side of the vent. Seller's
installation and operating instructions shall be followed by the Buyer."

R-1: March 17, 2018
Accessory Wiring Instructions
See wiring diagram in panel for detailed wiring instructions.
If you have any questions, please contact your Walinga representative.
1. Remote Start/Stop
(a) Remote Start to be wired between terminal 5 and 6.
(b) Remote Stop
1. Remove jumper between terminal 4 and 3.
2. Remote Stop to be wired between terminal 4 and 3.
2. Purge Circuit
(a) Timer Board Power Connection to be wired between terminal 7 and 2. (Voltage
120VAC)
3. High-Level Sensor
(a) High-Level Sensor (Normally open) to be wired between terminal 8 and 3. (Voltage
120VAC)
4. Auxiliary Stop Sensor
(a) Remove jumper between terminal 9 and 3.
(b) Auxiliary Stop Sensor (Normally open) to be wired between terminal 9 and 1a.
(Voltage 120VAC)
5. Open Gate Solenoid
(a) Open Gate Solenoid to be wired between terminal 10 and 2. (Voltage 120VAC)
6. Close Gate Solenoid
(a) Close Gate Solenoid to be wired between terminal 11 and 2. (Voltage 120VAC)
Central-Vac Air-Purge Installation Manual 09292020